Chemistry A-Level
Enthalpy changes of bond breaking and bond making
What Enthalpy changes of bond breaking and bond making means in Chemistry A-Level, as defined for OCR.
Definition of Enthalpy changes of bond breaking and bond making
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Reference: OCR
Breaking a covalent bond requires energy from the surroundings and is endothermic with a positive enthalpy change, while making a bond releases energy to the surroundings and is exothermic with a negative enthalpy change.
Topics that use Enthalpy changes of bond breaking and bond making
- Enthalpy changes (OCR A-Level)
Related terms
- ∆H of combustion
- ∆H of formation
- Activation energy
- Approximate estimate
- Average bond enthalpy
- Averaging over gaseous compounds
- Bond breaking and bond making
- Bond enthalpy
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